I ended up purchasing the Marine Technical Concepts PROCAL Calcium Reactor which was delivered this past weekend. After researching calcium reactors in the price range of around $700, it came down to the Life Reef (LCR 2), GEO CR818 and the MTC PROCAL. I went with the PROCAL due to the duel reactor, compact footprint (height restriction under tank) and the uniqueness not generally found in mass produced units.
I set it up on Saturday and put the CO2 in service, while removing my 2-part dosing and let it ride at 2BPS and 70 ml per min. The alk seem to maintain at around 8.5 dkh on Sunday but has slowing risen to about 9.8 dkh this morning while my outflow pH of around 6.7-6.8 was maintained. My only adjustment made since setting it up was this morning consisting of slightly decreasing the outflow to see if that would help reduce the rise in alk. I have been monitoring the outflow pH at work via Apex Fusion and it has slowing lowered a bit to around 6.72-6.73, which I expected with the reduced outflow. I will check my alk when I get home tonight and make further adjustments as necessary.
Here is my set-up, which neatly fits next to the sump and under my tank: